Answer:
angle D equal to 3 X + 20 + 7 x minus 3 x
=90 degree equal to x minus 3 X + 20
7 X equal to 70 X equal to 10
Answer:
12.8mph
Step-by-step explanation:
Let 'w' represent her walking speed
->if her jogging speed is 8mph faster than her walking speed
Jogging speed= w+8
Using the time equation i.e time = dist/speed
For walking when distance is 8miles
time = dist / speed= 8/w hrs
For jogging when distance is 13miles
time = dist / speed= 13/(w+8) hrs
Equating the time
jog time = walk time
13/(w+8) = 8/w
By cross multiplying it
13w = 8w + 64
5w = 64
w=64/5
w=12.8mph
Therefore, 12.8mph is her walking speed.
Answer:
4. 988 people
5. a. 7 quarters
b. 6 quarters 2 dimes 1 nickel
c. 5 quarters 5 dimes
d. 4 quarters 7 dimes 1 nickel
1. $65.65, $5.05
2. $7.70, $15.40
3. a. 7 quarters
b. 6 quarters 2 dimes 1 nickel
c. 5 quarters 5 dimes
d. 4 quarters 7 dimes 1 nickel
4. 31 bags
5. $30, $4.50
Step-by-step explanation:
4. take value times percent.
5. think coins
1. find difference then divide by number of days (13)
2. multiply by 1/3 then find difference.
3. think coins
4. find area then divide by 200
5. just break the problem down and go quarter by quarter.
Answer:-2
Step-by-step explanation:
